docs: format GHOST_COCKPIT_SPEC.md

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Tyler Gillispie 2026-08-23 21:56:46 -07:00
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## Overview
The Ghost Cockpit Protocol provides a seamless experience for real-time applications connected via WebSockets to Auth-Yes secured services. When a user's session expires or is revoked, instead of abruptly disconnecting and redirecting the user to a login page (losing unsaved state or telemetry data), the application enters a "frozen" or "ghost" state.
The Ghost Cockpit Protocol provides a seamless experience for real-time
applications connected via WebSockets to Auth-Yes secured services. When a
user's session expires or is revoked, instead of abruptly disconnecting and
redirecting the user to a login page (losing unsaved state or telemetry data),
the application enters a "frozen" or "ghost" state.
In this state:
1. The WebSocket connection is gracefully terminated by the server with a specific control frame and status code.
1. The WebSocket connection is gracefully terminated by the server with a
specific control frame and status code.
2. The UI freezes real-time updates and input, keeping the current state intact.
3. A background or modal re-authentication process (like WebAuthn biometric prompt) is triggered.
4. Upon successful re-authentication, the WebSocket connection is re-established, and the application resumes normal operation without any page reload.
3. A background or modal re-authentication process (like WebAuthn biometric
prompt) is triggered.
4. Upon successful re-authentication, the WebSocket connection is
re-established, and the application resumes normal operation without any page
reload.
## Choreography
1. **Active Connection:** The client maintains an active WebSocket connection. The backend uses the `createWebSocketGuard` to monitor the session.
2. **Session Invalidation:** The Auth-Yes API Gateway or an admin invalidates the session. An `invalidate` event is propagated through the `AuthSdk`.
3. **Revocation Frame:** The WebSocket Guard intercepts the event and sends a JSON control frame:
1. **Active Connection:** The client maintains an active WebSocket connection.
The backend uses the `createWebSocketGuard` to monitor the session.
2. **Session Invalidation:** The Auth-Yes API Gateway or an admin invalidates
the session. An `invalidate` event is propagated through the `AuthSdk`.
3. **Revocation Frame:** The WebSocket Guard intercepts the event and sends a
JSON control frame:
```json
{ "type": "AUTH_REVOKED", "reason": "SESSION_EXPIRED" }
```
4. **Connection Close:** Immediately after sending the frame, the server closes the WebSocket with status code **1008 (Policy Violation)** and reason **"Session Expired"**.
5. **Client Freeze:** The client application receives the `AUTH_REVOKED` frame (or detects the 1008 close code) and transitions to the "Ghost Cockpit" state.
6. **Re-authentication:** The client calls Auth-Yes endpoints (e.g., `/api/login/challenge` and `/api/login/verify`) using the Web Authentication API (`navigator.credentials.get()`).
7. **Resumption:** Once a new session token is obtained, the client reconnects the WebSocket and the UI unfreezes.
4. **Connection Close:** Immediately after sending the frame, the server closes
the WebSocket with status code **1008 (Policy Violation)** and reason
**"Session Expired"**.
5. **Client Freeze:** The client application receives the `AUTH_REVOKED` frame
(or detects the 1008 close code) and transitions to the "Ghost Cockpit"
state.
6. **Re-authentication:** The client calls Auth-Yes endpoints (e.g.,
`/api/login/challenge` and `/api/login/verify`) using the Web Authentication
API (`navigator.credentials.get()`).
7. **Resumption:** Once a new session token is obtained, the client reconnects
the WebSocket and the UI unfreezes.
## Reference Client Implementation
Below is a complete, reference client-side TypeScript snippet demonstrating the `GhostCockpitClient` class that manages this lifecycle.
Below is a complete, reference client-side TypeScript snippet demonstrating the
`GhostCockpitClient` class that manages this lifecycle.
```typescript
/**
@ -102,11 +122,15 @@ export class GhostCockpitClient {
private async handleSessionExpired() {
if (this.isFrozen) return; // Already handling
this.setFrozen(true);
console.log("[GhostCockpit] UI Frozen. Initiating background re-authentication...");
console.log(
"[GhostCockpit] UI Frozen. Initiating background re-authentication...",
);
try {
// 1. Fetch WebAuthn Challenge from Auth-Yes
const challengeRes = await fetch("/api/login/challenge", { method: "POST" });
const challengeRes = await fetch("/api/login/challenge", {
method: "POST",
});
if (!challengeRes.ok) throw new Error("Failed to get challenge");
const challengeData = await challengeRes.json();
@ -115,7 +139,7 @@ export class GhostCockpitClient {
// 2. Prompt user for Biometrics / Security Key via Web Authentication API
const credential = await navigator.credentials.get({
publicKey: challengeData.publicKeyRequestOptions
publicKey: challengeData.publicKeyRequestOptions,
});
if (!credential) throw new Error("Credential not provided");
@ -124,15 +148,16 @@ export class GhostCockpitClient {
const verifyRes = await fetch("/api/login/verify", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ credential }) // Mock serialization
body: JSON.stringify({ credential }), // Mock serialization
});
if (!verifyRes.ok) throw new Error("Re-authentication failed");
console.log("[GhostCockpit] Re-authentication successful! Reconnecting...");
console.log(
"[GhostCockpit] Re-authentication successful! Reconnecting...",
);
// Reconnect with new session (implicitly via browser cookies or explicit headers)
this.connect();
} catch (err) {
console.error("[GhostCockpit] Re-authentication error:", err);
// Fallback: Redirect to full login page or show permanent error